netdev - [v4.12 regression] netns: NULL deref in fib_sync_down

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Date:   Fri, 28 Jul 2017 18:00:47 +0200
From:   Michał Mirosław <mirq-linux@...e.qmqm.pl>
To:     netdev@...r.kernel.org
Subject: [v4.12 regression] netns: NULL deref in fib_sync_down_dev()

Dear NetDevs,

Before I go to bisecting, have you seen a following NULL dereference,
yet?  Where should I start looking?  It is triggered by deleting netns
(cut-down script attached - triggers every time).  This was working
correctly under v4.11.x.

Best Regards,
Michał Mirosław

View attachment "XXX-BUG-linux-netns" of type "text/plain" (4369 bytes)

View attachment "net-test" of type "text/plain" (664 bytes)